63564656364 has 96 divisors (see below), whose sum is σ = 181998593280. Its totient is φ = 19261987920.

The previous prime is 63564656321. The next prime is 63564656383. The reversal of 63564656364 is 46365646536.

It is a happy number.

63564656364 is a `hidden beast` number, since 6 + 35 + 6 + 46 + 563 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 63564656364.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234054 + ... + 426509.

It is an arithmetic number, because the mean of its divisors is an integer number (1895818680).

Almost surely, 2^63564656364 is an apocalyptic number.

It is an amenable number.

63564656364 is an abundant number, since it is smaller than the sum of its proper divisors (118433936916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63564656364 is a wasteful number, since it uses less digits than its factorization.

63564656364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660599 (or 660579 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 54.

The spelling of 63564656364 in words is "sixty-three billion, five hundred sixty-four million, six hundred fifty-six thousand, three hundred sixty-four".